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--- en:color [2020/11/22 20:54]
admin
+++ en:color [2020/11/22 21:26] (current)
admin
@@ Line 3: / Line 3: @@
 ==== Format ====
-**color** [[colorconstants|color_name]]\\
+**color** color\\
-**color** ( [[colorconstants|color_name]] )\\
+**color** ( color )\\
-**color** [[rgb|rgb_expression]]\\
+**color** pen_color, brush_color\\
-**color** ( [[rgb|rgb_expression]] )\\
+**color** ( pen_color, brush_color )
-**color** [[string|svg_color_string]]\\
-**color** ( [[string|svg_color_string]] )\\
-**color** [[colorconstants|pen_color_name]] , [[colorconstants|brush_color_name]]\\
-**color** ( [[colorconstants|pen_color_name]] , [[colorconstants|brush_color_name]] )\\
-**color** [[rgb|pen_rgb_expression]] , [[rgb|brush_rgb_expression]]\\
-**color** ( [[rgb|pen_rgb_expression]] , [[rgb|brush_rgb_expression]] )
-**color** [[string|pen_svg_color_string]], [[string|brush_svg_color_string]]\\
-**color** ( [[string|pen_svg_color_string]], [[string|brush_svg_color_string]] )\\
 ==== Description ====
-Sets the current drawing color to //colorname// or to an ARGB value where ( (a * 256 + r) * 256 + b) * 256 + g.  If a single color is specified both the pen and the brush will be set to the same color.
+Sets the current drawing color to //colorname// or to an ARGB value where ((a * 256 + r) * 256 + g) * 256 + b.  If a single color is specified both the pen and the brush will be set to the same color.  There are several ways to define a color in BASIC256:
+  - one of the defined color constants (see table below);
+  - an integer to define the color where ((a * 256 + r) * 256 + g) * 256 + b,
+    * a - transparency 0 = transparent to 255 = opaque
+    * r - red 0 = off to 255 = full on
+    * g - green 0 = off to 255 = full on
+    * b - blue 0 = off to 255 = full on
+  - the [[rgb|rgb]] function passing it 3 or 4 numbers from 0-255,
+  - using an svg color name as a string [[https://www.w3.org/TR/SVG11/types.html#ColorKeywords|as defined by the W3C]],
+  - or using a string with a "#" followed by 6 or 8 hexadecimal digits ("#ff0000", "#a0ffffff")
 When drawing solid shapes ([[Chord|Chord]],[[Circle|Circle]],[[Pie|Pie]],[[Poly|Poly]],[[Rect|Rect]], and [[Stamp|Stamp]]) the border of the shape will be drawn with the pen color and the shape itself will be filled with the brush color.  A brush color of CLEAR is used to not fill a closed shape.
@@ Line 43: / Line 46: @@
 color rgb(255,160,160)
 circle 100,100,25
+penwidth 5
+color "firebrick","#fab856"
+rect 150,150,100,100
+color "papayawhip", "clear"
+rect 175,175,100,100
 </code>
-Will draw a grey rectangle with a green circle filled with red and then a pink circle inside it.\\
+Will draw the following:\\
-{{:color.png|Color}}
+{{:color2.png|Color}}

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